<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<script type="text/javascript">
			
			var num = 10;
			console.log('init num : '+num);
			
			num = "this is string";
			console.log('value1 num : '+num);
			
			num = 20;
			console.log('value2 num : '+num);
			
			
			
			num += 10;
			console.log('num += 10  (num = num+10) : '+num); //30
			
			num -= 3;
			console.log('num -= 10 (num	= num-10): '+num); // 27
			
			num *= 2;
			console.log('num -= 10 (num = num*10): '+num); ;// 54
			
			num /= 3;
			console.log('num -= 10 (num = num/10): '+num); //18 
			
			num %= 4;
			console.log('num -= 10 (num = num%10): '+num); //2
			
			
			
					
		</script>
	</head>
	<body>
		
		
		
		
		
		
		
	</body>
</html>
